92: The air in a gas turbine plant passes from the compressor through a heat exchanger, heated by exhaust gases coming from a low-pressure turbine. The air then enters the high- pressure combustion chamber. The high-pressure turbine drives the compressor only. The exhaust gases coming out of the high-pressure turbine is heated into a low-pressure combustion chamber and then enters the low-pressure turbine, which is coupled to external load. Pressure ratio in the compressor is 4:1, isentropic efficiency of the compressor, H.P. turbine, and L.P, turbine are 0,83, effectiveness of heat exchanger is 0.75, mechanical efficiency of the drive to the compressor is 0.9, temperature of gases entering HP and LP turbine, 660°C and 625°C respectively, atmospheric pressure and temperature are 1 bar and 17°C. Assume specific heat of gas and air as 1.005kJ/kg K and 7-14. Calculate the overall efficiency of the plant that shown in figure in the second page.
92: The air in a gas turbine plant passes from the compressor through a heat exchanger, heated by exhaust gases coming from a low-pressure turbine. The air then enters the high- pressure combustion chamber. The high-pressure turbine drives the compressor only. The exhaust gases coming out of the high-pressure turbine is heated into a low-pressure combustion chamber and then enters the low-pressure turbine, which is coupled to external load. Pressure ratio in the compressor is 4:1, isentropic efficiency of the compressor, H.P. turbine, and L.P, turbine are 0,83, effectiveness of heat exchanger is 0.75, mechanical efficiency of the drive to the compressor is 0.9, temperature of gases entering HP and LP turbine, 660°C and 625°C respectively, atmospheric pressure and temperature are 1 bar and 17°C. Assume specific heat of gas and air as 1.005kJ/kg K and 7-14. Calculate the overall efficiency of the plant that shown in figure in the second page.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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